Question

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Answer 1

Explicación paso a paso:

$\\ \\ d) \sqrt{20} + \frac{1}{3} \sqrt{45} + 2 \sqrt{125} \\ \\ = \sqrt{2 {}^{2} \times 5 } + \frac{1}{3} \sqrt{3 {}^{2} \times 5 } + 2 \sqrt{5 {}^{3} } \\ \\ = 2 \sqrt{5} + \sqrt{5} + 10 \sqrt{5} \\ \\ = 13 \sqrt{5}$